That can be realized by load sensing, bypass throttling and power source of constant flow.
减少压力过剩可采用负载感应，旁路节流和恒流动力源实现。
The constant current source is realized by inverter power.
恒流源由单相逆变电源实现。
It works through providing the hydraulic power source by test bed.
通过试验台提供液压动力源实现操作。
It works through providing the hydraulic power source by test bed.
通过试验台提供液压动力源实现操作。
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